What Is the Maximum Interest Rate Allowed by Law?

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Quick Answer

In the United States, the maximum interest rates financial institutions can charge are controlled by state law, and they vary from state to state. For example, Delaware sets the limit at 5 percent above the current federal discount rate while some other states have no limits at all.

Most states have "usury limits" dictating the maximum legal interest rates. Some states have different limits for different types of loans, such as consumer and non-consumer loans. Additionally, some states also include various conditions and exclusions. For instance, on a residential mortgage loan, Delaware does not limit the interest rate if the loan is greater than $100,000 and is not secured by a mortgage against the primary residence of the borrower.